Research Interests
My research focuses on the composition of the Earth’s core, particularly the light element component, by investigating phase diagrams of iron alloys and chemical reactions between silicates and iron metal. Using diamond anvil cells and laser-heating to experimentally recreate the high pressures (up to >100 GPa) and high temperatures (several thousand K) of the Earth’s deep interior, I study the physical and chemical properties of minerals and melts at these conditions.
Published Papers
Cottrell, E., Kelley, K.A., Lanzirotti, A.T., and Fischer, R.A. (2009) High-precision determination of iron oxidation state in silicate glasses using XANES. Chemical Geology (268), 167–179.
Lin, J.F., Scott, H.P., Fischer, R.A., Chang, Y.Y., Kantor, I., and Prakapenka, V.B. (2009) Phase relations of Fe-Si alloy in Earth’s core. Geophysical Research Letters (36), L06306.
Jacobsen, S.D., Holl, C.M., Adams, K.A., Fischer, R.A., Martin, E.S., Bina, C.R., Lin, J.F., Prakapenka, V.B., Kubo, A., and Dera, P. (2008) Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure gauge for helium pressure media. American Mineralogist (93), 1823-1828.
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REBECCA FISCHER